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Old 10-12-2022, 08:04 PM   #501
IROCZman15
10 Second Club / Meet Coordinator
 
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Join Date: Dec 2004
Location: Roxbury, NJ
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Went over to Island Dragway this past Sunday knowing the track prep was going to be good. Knew I am not dialed in for a big bracket race, but since there was no available lanes for Test-n-Tune, I jumped into the N2 (10.00-11.99) Bracket for the Fall Nostalgia Event. Weather was stellar. There were a LOT of cars racing, plus they had 10 nostalgia alcohol funny cars and two nitromethane vintage funny cars, so lots of crowds that day. Got there way early before the gates opened and I was already at the end of a long line of traliers and cars. After I got in, I found an available spot wayyy up by the end of the 1/4 mile where the overhead E.T. and MPH signs are.

Each group only got 1 timeshot test pass in the morning, and then it would be on to round 1 eliminations where I fully expected to get knocked out. For my first pass, I had the car setup with The front skinnies at 48 psi. Rear tires at 17.6 psi. Rear air bags 7 psi drivers side and 10.2 psi passenger side. Rear shocks at 2.0 drivers side and 2.5 passenger side. The 150 jets were in it, and I am beginning to think that when i was doing the math to pick the jutting #'s for a 150 shot, I went too big on the fuel jet? Anyways, I had a progressive tuneup for that 150 shot, and it ramped in from a 75 shot to the 150 shot over 1.2 seconds, and timing ramps from 34.0 na to be 2.0 degrees while spraying the full 150 shot at 1.2 seconds in. Nitrous bottle pressure is kinda ballpark where it should be. My gauge at the bottom can say 1100, but hte one on my a-pillar nitrous gauge shows around 950, so I am going to have to figure that situation out, probably in wintertime, but I am guessing bottle pressure is closer to 1050psi.

Pass 1: Did a decent 6 second burnout. Was not concerned with reaction time, more about getting a good footbrake rpm at the line. Footbraked the car to 2506 rpms and let off sending the flash stall to 5130 rpms. I shifted 1st at 6622 rpms and the new converter put the 2nd gear rpms at 5562. I then short shifted the 2-3 shift at 6267 and it landed at 5724 in 3rd gear. I went through the finish line after hitting the top-end rev limiter on the nitrous file, so I got off the button and shifted 3-4 actually, just to see what it would do. I shifted from 3rd at 6243 and it brought rpms to 5482. Then i went through the traps finally, at 5518 rpms. The sixty foot felt great, but not earth shattering. I expected a good 1/8th mile but the back half of the track was going to be slower because of shifting into 4th and dogging the car down. I almost wish I had a better reaction time, because the race would have been a full side-by-side-to-the-finish race with the car next to me.

Timeslip:





datalog:

r





Go Pro Video:

https://www.youtube.com/watch?v=wDSobVZ62uk


Dash cam video:

https://www.youtube.com/watch?v=G9LvPWdTtyY


Checked 3 plugs after the run and they were good. Looked at the datalog above and noticed what might be signs of knock in the rpm trace. Lowered rear tires to 17.0 psi, but all shock and suspension setting stayed the same. Decided to go add a little of the "race Fuel" additive that I used last year when doing full track nitrous passes. Decided to put a 10.55 e.t on the dial-in for round 1, and I moved the ramp nitrous come on with more % since I felt certain it would hook on the surface; after all, funny cars were! Did a 6 second burnout. Footbraked the rpms up to 3006 rpms which I quickly found out was just a little too muhc. the car began to push forward and I was staged so i couldn't back off. The car pushed through the beams and started the clock and thene I decided to hammer down anyways to get data and a full pass. Converter flashed to 5212. I hit the rev limiter in 1st gear and shifted away from that at 6558 which dropped roms to 5557 in 2nd gear. Shifted 2nd at 6360 and that landed a 5714 rpm in 3rd gear. Knowing that shifting into OD/4th was a bad idea, I figured it was time to lock up the converter so at 6108 rpms I hit the converter lockup button (too early?) and it pulled rpms down to 5729. I crossed the finish at 6389 rpms. On the datalog, the AFR was rich, the Closed Loop compensation was maxed out pulling 20% fuel almost the whole run (yellow line)....so either too big of a fuel jet or the issue with nitrous bottle pressure. ..also, i didn't really stand a chance of winning that round, the guy went 11.608 on an 11.60 dial-in.

Timeslip (my times all skewed because I rolled the beams and then launched, but the mph is useable):




Datalog:





GoPro video:

https://www.youtube.com/watch?v=areHmUOztbg


Dashcam video:

https://www.youtube.com/watch?v=Vs_ooW-f940



Hungout for a while with my Dad and some other racer buddies that were there; including jerry and his 57 in the N3 bracket. He was going rounds, winning like usual and picking up time/speed as the day went on but dead on his dial-ins and lights. Awesome! watched funny cars and gassers, and various groups of brackets run. After the funny cars made their last pass, most spectators cleared out. I asked the track staff if I could get one test-tune pass if there was a rbeak in the bracket action for a moment. They let me do so, and I was hopeful to redeem myself before heading home.


Pass 3: I loaded in a fixed 150-shot tuneup, one that I had used back in may 2022; no progressive nitrous ramp. All shock and airbag settings were the same but I lowerd rear tire pressure to 16.2 psi in both. Did a 6 second bunout. I footbraked, but never held a steady amount, so its aard to tell when I started to push the nose again, and unknown where I launched from. It does look like hte converter flashed around 4741 and I took first gear to 6515 rpms which dropped it into second at 5754. Took second gear to 6335 and this dropped into 3rd at 5733 rpms. Carried 3rd gear all the way to teh finish, and got off the nitrous which let me cross the line at 6503 rpms. AFR again was still very rich averaging 11.8-12.2 across most of the run. CL comp% was again maxed out removing fuel.


Timeslip:

datalog:




Dashcam video:
https://www.youtube.com/watch?v=sAcgXHb51Ok

other video:
https://www.youtube.com/watch?v=a9DFb0tErSg



Was decently happy with that, as it did hookup and launch pretty good but I think I gotta shot for a 2800 rpm footbrake launch. I am still hoping for that 1.3xx sixty-foot on a timeslip, and would love to run a real solid 10.4x quarter. I think it has it in it, the car pulls great and wicks through 1st gear wildly fast, but I think now my shifting habits from the old converter need to be adjusted so I stop hittingthe 1st gear limiter, and so I rev out 2nd gear more.

Anyways, I packe dup my gear, but I knew that Jerry was still in it, so I went down to watch him keep on doing what he does best. He went to the N3 brackt's finals, and won it. Got a nice trophy and that was real cool to see a friend win something at the track!

Video:

https://www.youtube.com/watch?v=VvpnyxeuaKg




Some photos and funny car videos:


https://www.youtube.com/watch?v=AArtLP0EdIE


https://www.youtube.com/watch?v=T4XaGPf6bXM

https://www.youtube.com/watch?v=9OraVfYgXbY

the usual way I do the burnout:
https://www.youtube.com/watch?v=qM4i_1AKWrc





The wheelies I am getting:


The wheelie photo I want!!!


Pretty surprised It is wrinkling the sidewall of this drag radial. Slicks wrinkle for sure, but wasn't expecting this size drag radial to do so!




Jerry winning


And us heading out :
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1987 IROC-Z - modified


Last edited by IROCZman15; 10-12-2022 at 08:13 PM.
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